The stakes are higher than ever for Adam, Harry and the team as a series of terrorist attacks and political cover-ups threaten national security on an unprecedented scale.
Packed with classic Spooks' intrigue, Series 4 features all ten episodes plus a host of never before seen special features, shot exclusively for the DVD.
Extras: Two-part documentary about the making of Series 4 of Spooks, including interviews with cast members, episode clips and extensive behind-the-scenes footage from both the set and location. (60 mins)
Exclusive Interview with Spooks Director, Julian Simpson (25 mins)
Peter Firth (Harry) Interview (10 mins)
10 x Episode Audio Commentaries (59 mins each)